Using light diffuser in tank.
I was wondering if I could use a plastic light diffuser in my tank to block off a corner of my tank. I saw on another website that you can use this instead of fragment racks as maybe a cheaper alternative, and the design of those is what I want. Something that has holes so the plants can still get light and water flow, but small enough for my fish to not be able to get through. My main concern is if there is any kinds (i.e. types of plastics) I should avoid when I go to Home Depot or Lowes to pick these up. Or if there may be something better to use.